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- Title
Optical Fano resonance of an individual semiconductor nanostructure.
- Authors
Pengyu Fan; Brongersma, Mark L.; Zongfu Yu; Shanhui Fan
- Abstract
Fano resonances with a characteristic asymmetric line shape can be observed in light scattering, transmission and reflection spectra of resonant optical systems1. They result from interference between direct and indirect, resonance-assisted pathways. In the nanophotonics field, Fano effects have been observed in a wide variety of systems, including metallic nanoparticle assemblies2, metamaterials2,3 and photonic crystals4,5. Their unique properties find extensive use in applications, including optical filtering, polarization selectors, sensing, lasers, modulators and nonlinear optics6-11. We report on the observation of a Fano resonance in a single semiconductor nanostructure, opening up opportunities for their use in active photonic devices. We also show that Fano-resonant semiconductor nanostructures afford the intriguing opportunity to simultaneously measure the far-field scattering response and the near-field energy storage by extracting photogenerated charge. Together they can provide a complete experimental characterization of this type of resonance.
- Subjects
FANO resonance; LIGHT scattering; ELECTRONIC modulators; PLASMONICS; ENERGY storage; PHOTODETECTORS; NANOWIRES; PHOTOLITHOGRAPHY
- Publication
Nature Materials, 2014, Vol 13, Issue 5, p471
- ISSN
1476-1122
- Publication type
Article
- DOI
10.1038/NMAT3927